M48T254V datasheet(12/24 Pages) STMICROELECTRONICS

12 / 24 page

M48T254V

12/24

Table 7. AC Electrical Characteristics

Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 3.0 to 3.6V (except where noted).

2. These parameters are sampled with a 5 pF load are not 100% tested.

3. tWP is specified as the logical AND of CE and WE. tWP is measured from the latter of CE or WE going low to the earlier of CE or

WE going high.

4. tWR is a function of the latter occurring edge of WE or CE.

Symbol

Parameter(1)

M48T254V

Unit

Min

Max

tAVAV

tRC

READ Cycle Time

100

tAVQV

tACC

Access Time

100

tELQV

tCO

Chip Enable Low to Output Valid

100

tGLQV

tOE

Output Enable Low to Output Valid

tELQX

tCOE

(2)

Chip Enable or Output Enable Low to Output Transition

tAXQX

tOH

Output Hold from Address Change

tEHQZ

tOD

(2)

Chip Enable High to Output Hi-Z

tGHQZ

tODO

(2)

Output Enable High to Output Hi-Z

tWLQZ

tODW

(2)

Output Hi-Z from WE

tAVAV

tWC

WRITE Cycle Time

100

tWLWH

tELEH

tWP

(3)

WE, CE Pulse Width

tAVEL

tAW

Address Setup Time

tWHAX

tAH1

Address Hold Time from WE

5ns

tEHAX

tAH2

Address Hold Time from CE

tWHQX

tOEW

(2)

Output Active from WE

5ns

tDVEH

tDVWH

tDS

Data Setup Time

tWHDX

tDH1

Data Hold Time from WE

0ns

tEHDX

tDH2

Data Hold Time from CE

tRR

READ Recovery (Clock Access Only)

tWR

(4)

WRITE Recovery (Clock Access Only)

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